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Moderate Physical Activity May Reduce Postmenopausal Breast Cancer Risk

Moderate Physical Activity May Reduce Postmenopausal Breast Cancer Risk

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The association with total activity did not differ significantly between estrogen and progesterone receptor–positive and –negative tumors (P = .65 for heterogeneity)," the study authors write. "Our findings suggest that moderate physical activity, including brisk walking, may reduce postmenopausal breast cancer risk and that increases in activity after menopause may be beneficial."